An operator may pertain-to a station.Logical formLearned from11 sentences. Levels can be constituted-of-or-filled-with operators.Logical formLearned from11 sentences. Operators may evolve.Logical formLearned from11 sentences. Operators may develop.Logical formLearned from11 sentences. Operators may pertain-to facilities.Logical formLearned from11 sentences. A failure may pertain-to operator.Logical formLearned from11 sentences. Operators may pertain-to equipment.Logical formLearned from11 sentences. Deals can be with operators.Logical formLearned from11 sentences. A network may pertain-to an operator.Logical formLearned from11 sentences. Operators may state that something-is-the-case.Logical formLearned from11 sentences. An operator may be used as an unary operator.Logical formLearned from11 sentences. A (cable-television operator) may pertain-to a nation.Logical formLearned from11 sentences. An operator can be downstream.Logical formLearned from11 sentences. Operators can be approved.Logical formLearned from11 sentences. Operators can be discrete.Logical formLearned from11 sentences.